Double locking vehicle door latch

Details Double locking vehicle door latch Double locking vehicle door latch

1997-08-19

1999-05-04

Meyers, Steven

Closure fasteners

Bolts

Swinging

292DIG23, E05C 306

Patent

active

058995080

ABSTRACT:
A door latch assembly has a housing defining a mouth. A detent fork is pivotally mounted within the housing to cooperate with the mouth to pivot between an open and closed condition for receiving, engaging and cinching a keeper of a striker. The detent fork is biased in the open condition. A pivotally mounted pawl is biased into engagement with the detent fork for retaining the detent fork in the closed condition. A pivotally mounted inside release lever is movable between a stand-by position and a release position and biased to the stand-by position. A pivotally mounted outside release lever is movable between a stand-by position and a release position, and biased to the stand-by position. A pivotally mounted locking cam operably engages the pawl for positioning the pawl to selectively engage the release levers. The locking cam is rotatable between an unlocked position for urging the pawl to engage at least one of the levers, a single lock position for urging the pawl to engage at most one of the levers, and a double lock position for urging the pawl to disengage both levers. A double lock lever operably engages the rotatable locking cam for rotating the locking cam between the unlocked position, the single lock position and the double lock position. A single lock sub-assembly is coupled to the rotatable locking cam for rotation therewith between the unlocked position and the single lock position and uncoupled from the rotating locking cam when the rotatable locking cam is rotated between the single lock position and the double lock position.

REFERENCES:
patent: 3998482 (1976-12-01), Nozaki
patent: 4342209 (1982-08-01), Kleefeldt
patent: 4492395 (1985-01-01), Yamada
patent: 4921286 (1990-05-01), Nakamura
patent: 5092638 (1992-03-01), Mizuki
patent: 5236234 (1993-08-01), Norman
patent: 5438855 (1995-08-01), Ikeda
patent: 5474339 (1995-12-01), Johnson
patent: 5577583 (1996-11-01), O'Donnell
patent: 5577782 (1996-11-01), Johnson

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